2.18
9924871 R03 - 2014 Polaris Sportsman® 570 EFI Service Manual
© Copyright 2013 Polaris Sales Inc.
Compression Test Specification
NOTE:
This engine does have decompression
components.
A smooth idle generally indicates good compression.
Low engine compression is rarely a factor in running
condition problems above idle speed.
Cylinder Compression:
80 - 120 psi (decompression)
Engine Mounts
Inspect rubber engine mounts for cracks or damage.
Check engine fasteners and ensure they are tight.
Valve Clearance Inspection
NOTE:
Valve
clearance
inspection
should
be
performed on a cold engine, at room temperature.
1.
Remove the seats and disconnect the negative (-)
battery cable.
2.
Remove the air box cover and PVT ducting tubes.
(Non-Touring models require fuel tank removal.
3.
Remove the spark plug wire from the engine and
remove the spark plug. Place a clean shop towel into
the spark plug tube to prevent debris from entering
the combustion chamber.
4.
Remove the (3) T40 bolts retaining the valve cover.
NOTE:
Discard valve cover Isolators upon
removal.
New
Isolators
are
required
once
removed.
Inspect the valve cover gasket and replace if
damaged or signs of leaking are present.
5.
Remove the valve cover from the engine.
6.
Remove the outer PVT cover and drive belt as shown
in chapter 6.
MAINTENANCE
